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API RP 78 Overview RECOMMENDED PRACTICES FOR WELLBORE POSITIONING
Why are we doing this? The Operator Wellbore Survey Group (OWSG) committee recognized a need for a comprehensive body of work that defined a minimum standard and formed a subcommittee address.
As this evolved it was realized that this was a significant not only for the operators but all that worked in the field of surveying.
To ensure inclusiveness the OWSG subcommittee decided this would be best managed under a standards organization – API was chosen.
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Overview
o Discuss high level of what it means to be an API section
o What is the Purpose and Scope of the proposed RP
o More details of the proposed sections
o The recommended path forward to manage the task at hand
o Who to contact with in API if you would like to participate
o The next engagement
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API RP 78 Scope and Purpose MINIMUM GUIDELINE FOR OPERATIONS THAT ARE CONSIDERED MAINSTREAM IN INDUSTRY AND IN PRACTICE
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Purpose The purpose of this Recommend Practice is to provide a framework and minimum guidance for the planning, acquisition, quality assurance, storage, and use of wellbore position data for the well lifecycle. This includes the assessment of well objectives as they pertain to collision assessment and reserves targeting.
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Scope This recommended practice covers the effective representation of the trajectory; e.g., position measurement, trajectory calculation, rendering and presentation, uncertainty calculation and use with respect to other wells.
This recommended practice is not designed provide a method for determining the most accurate position, only a position that is properly represented by a mathematical error model that considers both the tool type and the environment that it was run.
Note: Remediation is beyond the scope of this document
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Scope (Cont) This recommended practice will include: o Methodologies for assessing well position objectives o Recommended planning processes to achieve well positioning objectives o Recommendation for database integrity and minimum software functional
requirements o Methods for managing and calculating wellbore proximity in relation to HSE and
Economic risk o Quality assurance processes utilized before, during, and following surveying
operations o Guidelines for assignment of position uncertainty models in accordance to data
quality and field acceptance criteria o Utilization of conventional industry methodologies for trajectory interpolation and
mathematical processing as it pertains to wellbore surveying o Guidelines for maps, visual renderings, and other deliverables
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Scope (Cont) Examples of what the recommended practice will not include:
Advanced geomatics, earth sciences (i.e., magnetics and gravity estimations), non-mainstream surveying techniques, emerging survey correction mathematical theory, positional uncertainty model derivation or developments, and directional drilling principles may be mentioned as they pertain to wellbore surveying but are not defined or addressed in detail.
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Managing the task “HERDING CATS IS AN UNDERSTATEMENT”
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Initial Steering Committee
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Core Team Lisa Grant
Bill Allen
Neil Bergstrom
Pete Clark
Ed Dew
Paul Gupta
Jonathon Lightfoot
Jordan Meyer
Son Pham
Will Tank
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The Outline/Strawman
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Outline
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“Sections”
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Section makeup Members:
◦ A member of the initial steering committee (or delegate)
◦ SMEs
◦ Others that have an interest or passions
Function: ◦ Add content to the strawman section assigned to that section/group
◦ Ensure the content is technically correct
◦ Return the content to the steering committee for integration into larger document
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Roles - Section Lead o Ensure that the team stays focus on what is in scope
o Create timeline
o Ensure delivery timelines are met and managed, organize gatherings within sections, set expectations
o Communication back to the Steering Committee
o Ensure consistency across “Sections”
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Roles - Technical Lead o Ensure that the statements are technically valid incorporating the
strength of the supporting members
o Ensure that the scope is met and identify gaps – “macro view”
o Ensure content reflects industry practices
o Communicates with Section Lead to ensure Section goals are met
o Sits (or delegates a proxy) for Comments Reconciliation Committee
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Roles - Supporting Member o Provide technical content and validation
o Works more “micro view”
o Expert Authority
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Surface Location
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Section Lead
Bert Kampes
Technical Lead
TBD
Survey Program
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Section Lead
Lisa Grant
Technical Lead
Ross Lowden
Survey Mathematics
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Section Lead
Pete Clark
Technical Lead
Chad Hanak
Software
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Section Lead
Bill Allen
Technical Lead
TBD
Database
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Section Lead
Jordan Meyer
Technical Lead
TBD
Position Uncertainty
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Section Lead
Will Tank
Technical Lead
Andy McGregor
Anti-Collision
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Section Lead
Steve Sawaryn
Technical Lead
TBD
QA/QC
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Section Lead
Roger Goobie
Technical Lead
Harry Wilson
Maps, Plots, Graphics
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Section Lead
Bill Allen
Technical Lead
TBD
Planning/Engineering
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Section Lead
Pete Clark
Technical Lead
Julie Cruse
Planning/Eng to Operations/Executions Transition/Handover (Potential Move into Operations)
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Section Lead
Will Tank
Technical Lead
TBD
Operations/Execution
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Section Lead
Ed Dew
Technical Lead
TBD
Post Survey Execution
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Section Lead
Jonathan Lightfoot
Technical Lead
TBD
Terms and Definitions
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Section Lead
Son Pham
Technical Lead
TBD
Resources Needed o Graphics and Illustrations
o e.g. elevation reference diagrams, maps, sample plats or staking diagrams, MWD axis, well locations,
o Flow Chart Generations
o Technical Writers
o Consistency and common voice
o Missing??
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Comment Review Steering Committee
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Comment Review Steering Committee Members:
◦ Members of the initial steering committee ◦ Members of Industry that have been actively involved, ideally a
minimum of one from each subcommittee
Function: ◦ To reconcile comments
NOTE: Only one ballot per company and voting is allowed if there is active participation in the standard creation process. Comments are allowed from all interested parties.
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References The RP 78 is not met to replace the work already completed
Reference include but are not limited to: ◦ The Introduction to Wellbore Positioning E-Book
◦ Collision Avoidance Workgroup practices and guidance documents
◦ Error Model Workgroup practices and guidance documents
◦ Other ISCSWA work products and guidance documents
◦ Collection of SPE Papers
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Participation / Next Steps o Sign up for a Section of Interest
o Each section membership will be assessed and possibly “Re – Balanced” if required
o Final groups will be created
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Questions
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